body {
  width: 80%;
  margin: 0 auto;
}
p span {
  display: block;
  width: 50px;
  height: 50px;
  background-color: khaki;
  border: 2px solid rgb(146, 12, 12);
}
p .in-b {
  display: inline-block;
  width: 50px;
  height: 50px;
  background-color: khaki;
  border: 2px solid rgb(146, 12, 12);
}
